Each training group will consist of three participants. The training sessions will last for 60 minutes, performed three days per week, for six weeks, between 10 am and 5 pm. A total of 32 exercises with up to 5 levels of difficulty are described and illustrated by photos, will be available in an "exercise bank". 10-12 repetitions for each exercise with good quality of movement will be performed. Every session will end with active stretching/active relaxation and instructions for home exercises. The participants will perform 30-minute of exercises, optional to divide into smaller intervals, at home two days per week when there are no organized group training.